Labyrinthine Structure with Subwavelength and Broadband Sound Insulation
In this text, the combination of spiral structure and zigzag channels is introduced to design labyrinthine structures, in which sound waves can propagate alternately in the clockwise and counterclockwise directions. Finite element method and S-parameter retrieval method are used to calculate band st...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2020-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2020/8868324 |
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| _version_ | 1832550833825251328 |
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| author | Heng Jiang Yu Liu Wenshuai Xu Tao Yang Dongliang Pei Meng Chen Yuren Wang |
| author_facet | Heng Jiang Yu Liu Wenshuai Xu Tao Yang Dongliang Pei Meng Chen Yuren Wang |
| author_sort | Heng Jiang |
| collection | DOAJ |
| description | In this text, the combination of spiral structure and zigzag channels is introduced to design labyrinthine structures, in which sound waves can propagate alternately in the clockwise and counterclockwise directions. Finite element method and S-parameter retrieval method are used to calculate band structures, effective parameters, and transmission properties of the structures. The influences of different structural parameters on their acoustic properties are also studied. These results show labyrinthine structures have multiple bandgaps in the range of 0 Hz–1000 Hz, and the proportion of bandgaps exceeds 33%, which indicates labyrinthine structures have good broadband properties. The normalized frequency of the lowest bandgaps is far smaller than 1, which indicates the structures take good control of sound waves on subwavelength scale. Combining units with different structural parameters can achieve better sound insulation. This research provides a new kind of space-coiling structure for low-frequency and broadband sound waves control, which have excellent application prospects. |
| format | Article |
| id | doaj-art-5ec663107b7c4563829299bc4b8b958b |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-5ec663107b7c4563829299bc4b8b958b2025-02-03T06:05:41ZengWileyShock and Vibration1070-96221875-92032020-01-01202010.1155/2020/88683248868324Labyrinthine Structure with Subwavelength and Broadband Sound InsulationHeng Jiang0Yu Liu1Wenshuai Xu2Tao Yang3Dongliang Pei4Meng Chen5Yuren Wang6Key Laboratory of Microgravity, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, ChinaKey Laboratory of Microgravity, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, ChinaKey Laboratory of Microgravity, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, ChinaKey Laboratory of Microgravity, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, ChinaKey Laboratory of Microgravity, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, ChinaKey Laboratory of Microgravity, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, ChinaKey Laboratory of Microgravity, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, ChinaIn this text, the combination of spiral structure and zigzag channels is introduced to design labyrinthine structures, in which sound waves can propagate alternately in the clockwise and counterclockwise directions. Finite element method and S-parameter retrieval method are used to calculate band structures, effective parameters, and transmission properties of the structures. The influences of different structural parameters on their acoustic properties are also studied. These results show labyrinthine structures have multiple bandgaps in the range of 0 Hz–1000 Hz, and the proportion of bandgaps exceeds 33%, which indicates labyrinthine structures have good broadband properties. The normalized frequency of the lowest bandgaps is far smaller than 1, which indicates the structures take good control of sound waves on subwavelength scale. Combining units with different structural parameters can achieve better sound insulation. This research provides a new kind of space-coiling structure for low-frequency and broadband sound waves control, which have excellent application prospects.http://dx.doi.org/10.1155/2020/8868324 |
| spellingShingle | Heng Jiang Yu Liu Wenshuai Xu Tao Yang Dongliang Pei Meng Chen Yuren Wang Labyrinthine Structure with Subwavelength and Broadband Sound Insulation Shock and Vibration |
| title | Labyrinthine Structure with Subwavelength and Broadband Sound Insulation |
| title_full | Labyrinthine Structure with Subwavelength and Broadband Sound Insulation |
| title_fullStr | Labyrinthine Structure with Subwavelength and Broadband Sound Insulation |
| title_full_unstemmed | Labyrinthine Structure with Subwavelength and Broadband Sound Insulation |
| title_short | Labyrinthine Structure with Subwavelength and Broadband Sound Insulation |
| title_sort | labyrinthine structure with subwavelength and broadband sound insulation |
| url | http://dx.doi.org/10.1155/2020/8868324 |
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